February 1, 1977
Episode 1 of Season 21 premiered on February 1, 1977
March 1, 1977
Episode 2 of Season 21 premiered on March 1, 1977
April 12, 1977
Episode 3 of Season 21 premiered on April 12, 1977
May 17, 1977
Episode 4 of Season 21 premiered on May 17, 1977
June 21, 1977
Episode 5 of Season 21 premiered on June 21, 1977
July 26, 1977
Episode 6 of Season 21 premiered on July 26, 1977
August 30, 1977
Episode 7 of Season 21 premiered on August 30, 1977
September 27, 1977
Episode 8 of Season 21 premiered on September 27, 1977
November 8, 1977
Episode 9 of Season 21 premiered on November 8, 1977
December 13, 1977
Episode 10 of Season 21 premiered on December 13, 1977